This Equalizer will satisfy your wishes about your sound appetizing, you can plug in your audio device or can be used as a guitar tone control.

If you don't want your audio device looks much potensiometer control, you can change the potensiometers with trimpot and it' will hided in the equalizer box.

Schematic of Octave Equalizer |

Solder side of Octave Equalizer PCB |

Component Side of Octave Equalizer PCB |

**Parts List :**

**Resistor:**

R1 = 68 KOhm

R2,R6,R11,R15,R16,R17,R18,1R19,R20,R21,R22 = 1 KOhm

R3 = 6,8 KOhm

R4,R7,R8,R9,R12,R13 =3,9 KOhm

R5,R1O = 12 KOhm

R14 = 220 KOhm

R23,R24,R25,R26,R27,R28,R29,R3O = 82 KOhm

P1...P8 = Potensiometer 10 KOhm linier

Capasitor:

Capasitor:

C1 = 820 nF

C2,C5,C6,C9,C36 = 820 pF

C3,C7 = 100 uF/4 V

C4,C8,C24,C30 = 4,7 nF

C10 = 470 nF

C11 = 1uF

C12,C15 = 270 nF

C13,C16,C2O = 47 nF

C14,C23 = 15 nF

C17 = 12 nF

C18,C21 = 3,3 nF

C19 = 33 nF

C22 = 560 pF

C25,C34 = 1 nF

C26 = 39 pF

C27 = 560 nF

C28 = 82 nF

C29 = 27 nF

C31 = 120 nF

C32,C35 = 39 nF

C33 = 6,8 nF

C37 = 1,5 nF

C38,C41 = 470 pF

C39 = 10 nF

C40 = 3,9 nF

C42 = 15 pF

C43,C44,C45,C46,C47,C48 = IO0 nF MKM

C49,C50 = 10 uF/25 V

**Semikonduktors:**

T1,T2,T5 = BC 549C/BC 550C

T3,T4,T6,T7 = BC 559C/BC 560C

IC1,IC2 = TL 084